langgraph-workflows

Define declarative LangGraph workflows with the StateGraph API.

3|1|Updated Jan 31, 2026
One-click install
npx skills add https://github.com/christian-bromann/langchain-skills --skill langgraph-workflows-christian-bromann
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: langgraph-workflows
Source: https://github.com/christian-bromann/langchain-skills/tree/main/skills/langgraph-workflows/python
Command: npx skills add https://github.com/christian-bromann/langchain-skills --skill langgraph-workflows-christian-bromann

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

LangGraph workflows provide a declarative approach to orchestrating complex agent execution by defining nodes and edges with conditional routing using the StateGraph API.

Core Features & Use Cases

  • Linear workflows with sequential node execution.
  • Branching and conditional routing for dynamic decision paths.
  • Looping and fan-in/fan-out patterns for iterative processes and parallelism.
  • Multi-agent coordination by routing between different node handlers.

Quick Start

Create a minimal LangGraph workflow with START, a few nodes, and an END.

Frequently Asked Questions about langgraph-workflows

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a declarative LangGraph workflow with StateGraph?

You can create a declarative LangGraph workflow by defining nodes and edges with conditional routing using the StateGraph API to orchestrate stateful execution. This approach allows you to model linear, branching, and looping graphs.

What is the best way to orchestrate multi-agent coordination in LangGraph?

The best way to orchestrate multi-agent coordination in LangGraph is by routing between different node handlers using the StateGraph API. This declarative method manages stateful execution and enables dynamic decision paths across agents.

Can I build looping and fan-in fan-out patterns using LangGraph workflows?

Yes, you can build looping and fan-in/fan-out patterns in LangGraph workflows to handle iterative processes and parallelism. The StateGraph API supports these declarative structures alongside branching for dynamic execution.

Do I need Python to define stateful node execution with the StateGraph API?

Yes, you need Python and the LangGraph library to define and execute stateful node graphs using the StateGraph API. It provides the necessary START and END constants to model declarative execution paths.

What are the limitations of declarative stateful node execution in LangGraph?

Declarative stateful node execution in LangGraph requires Python and the LangGraph library to model graphs. While it supports branching and looping, you must explicitly define START and END constants and node handlers to manage execution correctly.